Brandon Day was a 22-year-old full-time student at Palm Beach State College who reportedly loved playing guitar and piano and gave out gentle hugs.

On Wednesday night, deputies from the Palm Beach Sheriff's Office arrested 19-year-old Andrea Nicole Alvira for killing Day, 22, in January. Police say that she was an escort and that she suffocated him, possibly after he refused to pay her after oral sex.

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Day and Alvira met in a neighborhood parking lot in western Lake Worth around 3 a.m. on January 15 but parted -- Alvira later told investigators it was because Day didn't have money or a condom -- and met again around 5 a.m.

A security guard later saw Alvira chase Day and climb on him, pressing her knees on his neck. He cried for help, and the guard called 911. When deputies arrived, Day was unconscious. He died the next day.

Alvira allegedly initially told investigators that she met Day in a park and that he had robbed and raped her. She said she even had to bite his genitals to get him off of her. But authorities say her version of events doesn't match footage from security cameras -- which show the pair going into, then out of, a grassy area and drinking from a water fountain. They also say her story didn't match the physical evidence -- he did not bear bite marks on his body. Texts showed the two had arranged to meet -- it wasn't random.

It wasn't until March 26 that Day's death was ruled a suffocation. Alvira was picked up on U.S. 1 and charged with second-degree murder Wednesday night.

A childhood friend of Day's, Lauren Audra Chiavetta, said, "Brandon was really a great friend, and he always could cheer me up and make me laugh. He really meant a lot to everyone he knew."